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PTV in practice: oesophagus
•
In this exercise we will work out the antero-posterior margin
only, the latero-lateral and cranio-caudal margins can be
deduced in a similar way.
•
3D (isotropic) margins assume a ball rolling along the 3D CTV
… sounds easier than it is.
•
As this is an example based on a particular patient
population using a particular IGRT workflow, this
data is NOT TO BE USED in an other setting
.
The PTV 2017 - D. Verellen